Furnace



F. C. STANKRAUFF FURNAGE Filed Nov.. 26. 1921 June 112, E923.

INVENTOR.

ATTORNEY.

Patented ulune 12, 1923.

narra srarias FURNACE.

Application mea November 26,1921. serial No. 517,841.

To all whom t may concern:

Be it known that I, FRANK C. STAN- KRAUFF, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Furnaces, 'of which the following is a specification.

This invention relates to hot air furnaces, more particularly to the radiator drums' of such devices, and has for one of its objects to improve the construction and increase the eiiiciency and utility ofdevices of this character.

Another object of the invention is to provide a device of this character whereby a direct or indirect draft may be caused to passV through the drum by simply 1nanipulating a single pull rod.

Vith these and other objects in view the invention consists in ycertain novel features p' of construction as hereinafter shown and described and then specifically pointed out in the claims, and in the drawing illustrative of the preferred embodiment ofthe invention- Figure 1 is a transverse section of the improved radiator drum.

Fig. 2 is a vertical section of the structure shown in Fig. 1.

' A radiator drum in accordance with'this invention, comprises a-closed annular casing or shell having arranged therein a plu- 'rality'of circular partitions or'members', po-

sitioned between the top and bottom of the casing or shell, and mounted in spaced relation with respect to each other to provide an inner and an outer passageway and a lue spaced from the inner passageway The body portion of the casing or shell, is indicated at 10, which is tapered. denotes the top and 12 the bottom of the casing or'shell and which are formed integral with the body portion 10. Mounted between the top 11, and bottom 12, is a plurality of circular partitions or members 13, 14 and 15, and which are arranged in spaced relation and with thek member 15 spaced from thel body' portion 10. The member 13 provides a flue 16 which opens directly into the'top of the combustion chamber of the furnace. The means to provide the combustion lchamber is indicated vat .19'. The

member 15, is spaced from the member 14 to form an outer passageway. The member -but the members 13, 14 are tapered, 'so that the space between the members 13 and 14 will gradually increase in width upwardly. The member 15, which is positioned between the member 14 and body portion 10, is provided with an enlarged opening 21, of a height equal to the height of the member 15, and diametrically opposite the opening 21, the member 15 has its lower portion provided with an opening 34. The opening 21 establishes communication between the in ner passageway and the outer passageway, and the opening 34 when not `closed establishes communication between the inner passageway and the outer passageway.

The member 14, as well as the member 13 is provided with an opening, and formed integral with the edges of said openings are vertically disposed lateral plates 20, ywhich provide a passage 20 for establishing communication between the-flue 16, and the inner passageway. The passageway 20 is in alignment with and extends toward the opening 34. i

The means 19 which provide the co-mbusytion chamber of the furnace, has its upper vthe top of said means 19, whereby the-radia-` tor drumis supported within the casing 40, of the furnace bythe means 19. Formed in the body portion 10,- and in alignment with the passage 20', as well as the opening 34, is an opening 22, which is surrounded by a flange 23secured to a flange 24 on the inner endvof the smoke outlet flue 25, the latter is formed with a vertical 4flange surroundingran openin 26. Mounted on the flue 25"and surroun ing the flange at the opening 26, is a smoke a n discharge 'conducting flue 27.` rThe outer yend of the flue 25, is .provided with aclean- `out door 28.- The bottom o-f the Hue 25 extends upwardly at a slight inclination and the said flue 25 is provided with iianges 41, which are secured to the casing or shell 40.

The body portion I10, is formed with an.

opening 29, which is" in alignment with ytheqlopen-ing 21, and projecting` from the body portion 10, as well vas registering with the. opening 29, is a flue 32, which constitutes a clean-outtand is provided with a 3 2 is furthermore provided with. flangesl .12which'are secured to the casing or detachable closure 33. The-line 32 has flanges 31, which arey securedv to l flanges 30,' on thebody portion 10, and said flue shelliO." if. f, The opening 34, is normally closed by a damper 35,'which iscarried on the inner end ,ofa rodBG, vslidably mounted in a A f guide lug 37, carriedby the bottom 12 and Lof the drumash pit'. t

the said rod projects outwardly through the flue. 25. vThe bottom 12, atthe outer L passageway, is formed withan opening 38 andcommunicating therewithv is a downwardly extending flue or conducting'pipe 39, which is adapted to communicate with the ash ,pit, not shown, of the furnace, whereby dust 'and ashesdirectly from the interior may be conducted to the a The ,bodyportion 10'jis spaced from the Vcasingor shell 40, forming aipassage for -J hot air, andas the Vbodypoition-is secured `to `the fiues `25 and 32, and as these latter q are secured vto the casing- 40, the' drum is .not only supported from the combustion chamber forming means `19, but also from l the casing o-r shell 40.

Frompthe foregoing construction, when -1.the opening 34 is kclosed by the damper 35,

'thesmoke and other products of combus` 1tionpass through the passage '2O into the ..inner passageway-traveling in both directions therethrough and 'discharge .through :the opening 21 into the outer passageway,

i thence: in vbothdirections through the outer passageway to the outlet flue 25 and ,fronr l. there into the discharge flue 27. When the .damper 35 outwardly, the draft is directed f from` the fine 16, the passage 20', opening #34, through flue 25. f v

opening Stis opened shifting the `The providingv of the body portion, asy

ywell as certain of the circularipartitions taperedfacilitates the casting of the drum,

'as well as renders the walls partially self- Cleaning as the ashes, soot and like line particles will Vnot cling to the inclined wallsbut will-fall by gravityfthcrefrom.

The preferredembodiment of the inv'en f tion-is as hereinbeforedescribed and illus- G5 trated in the drawingbutit .will be under-v 'is claimed as new is z- 1. Ina furnace a hollow annular radiator element adapted to bemounted on the means providing the combustion chamber of .the furnace and comprising a body portion lhaving a top and bottom integral therewith andfurther including an inner, intermediate and outer spaced circular'memberinterposed between and integral with said top and bottom thereby providing an outer passageway, an intermediate passageway anda centrally disyposed flue spacedfrom the inner passage` way and formed with a closed top and jhav-. ing itsbottom opening directly into the top of the combustion chamber ofthe furnace, said top and bottom of said element ,formed with an opening to provide ,a'hot airoutlet passagebetween said inner andfintermef` munication between said flue and inner passageway, said outer member having ydia-v metrically opposed openings for establishing communication between said inner and outer passageways, an outlet `flue. leading from vsaid outer passagewayand inralignment with one ofthe openings in said vouter, member, and shiftable means forclosing ldiate members, means for establishing comene said last mentioned opening, said'bodyportion and said inner vand outer circular inembers being tapered. l

2. In a furnace a' hollow annular radiator .element adapted tobe'mountedy on the means c providing the combustion chamber of the furnace and comprising abody. portion having atop and bottomintegral ltherewith .and

further including aninner, intermediate and outerspaced circular member interposed between `and vintegral with said top and bottom thereby providing Yan outer passageway, an intermediate passageway and a centrally dis,- posed flue spaced from the inner passageway and formed with a closed top and having its bottom opening ydirectly into the top vof the combustion chamber ofl the furnace, .said top and bottom ofsaid element formed with `an opening to provide a hot air outlet passagefbe-l `tween said innery and intermediate members,

means `for establishing communication between said fluel and inner passageway, said outer member having diametricallyopposed openings y for establishing communication Lbetween said inner and outer passageways, an outlet flue leading fromsaid outerfpassageway and in alignment with ,one ofthe n a kopenings lin ,saidf outer member, .shiftable means for closing said lafst mentioned open,-`

ing, said `body portion and said inner and outer circular members being tapered, and a clean-out flue opening into said outer passageway and arranged in alignment with the openings in the intermediate member.

3. In a furnace a hollow annular radiator element adapted to be mounted on the means providing the combustion chamber of the furnace and comprising a body portion having a top and bottom integral therewith and further including an inner, intermediate and outer spaced circular member interposed between and integral with said top and bottom thereby providing an outer passageway and a centrally disposed flue spaced from the inner passageway and formed with a closed top and having its bottom opening directly into the top of the combustion chamber of the furnace, said top and bottom of Said element formed with an opening to provide a hot air outlet passage between said inner and intermediate members, means for establishing communication between said flue and inner passageway, said'outer member having diametrically opposed openings for establishing communication between said inner and outer passageways, said openings arrangedv in alignment with said means, one of said openings being smaller than the other and arranged in proximity to said means, an outlet flue leading from said outer passageway and in alignment with and having its inner end in proximity to said smaller opening, and shiftable means for closing said smaller opening.

4. In a furnace a hollow annular radiator element adapted to be mounted on the means providing the combustion chamber of the furnace and comprising a body portion having a top and bottom integral therewith and further including an inner, intermediate and outer spaced circular member interposed between and integral with said top and bottom thereby providing an outer passageway and a centrally disposed flue spaced from the inner passageway and formed with a closed top and having its bottom opening directly into the top of ythe combustion chamber of the furnace, said top and bottom of said element formed with an opening 'to provide a hot air outlet passage between said inner and intermediate members, means for establishing communication between said flue and inner passageway, said outer member having diametrically opposed openings for establishing communication between said inner and outer passageways, said openings arranged in alignment with said means, one of said openings being 'smaller than the other and arranged in proximity to said means, an outlet flue leading from said outer passageway and in alignment with and having its inner end in proximity to said smaller opening, and shiftable means for closing said smaller openings, said body portion and said inner and outer circular members being tapered and said intermediate member beingl vertical in cross section.

In testimony whereof, I afix my signature hereto.

FRANK C. STANKRAUFF. 

